package com.spzx.product.controller;


import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONArray;
import com.github.pagehelper.PageHelper;
import com.spzx.common.core.web.controller.BaseController;
import com.spzx.common.core.web.domain.AjaxResult;
import com.spzx.common.core.web.page.TableDataInfo;
import com.spzx.product.api.domain.ProductSkuVo;
import com.spzx.product.api.domain.SkuPriceVo;
import com.spzx.product.domain.Product;
import com.spzx.product.domain.ProductSku;
import com.spzx.product.query.SkuQuery;
import com.spzx.product.service.*;
import com.spzx.product.vo.*;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;

@Tag(name = "聚合数据")
@RestController
@RequestMapping("/channel")
public class ChannelController extends BaseController {

    @Autowired
    private ICategoryService categoryService;

    @Autowired
    private IProductSkuService productSkuService;

    @Autowired
    private IBrandService brandService;

    @Autowired
    private ISkuStockService stockService;

    @Autowired
    private IProductService productService;

    @Autowired
    private IProductDetailsService detailsService;


    @Operation(summary = "获取首页数据")
    @GetMapping("/index")
    public AjaxResult index() {

        List<CategoryVo> levelOneCategory = categoryService.getLevelOneCategory();
        List<ProductSkuVo> topSale = productSkuService.getTopSale();
        IndexDataVo indexDataVo = new IndexDataVo();
        indexDataVo.setCategoryList(levelOneCategory);
        indexDataVo.setProductSkuList(topSale);
        return success(indexDataVo);
    }

    @Operation(summary = "获取分类嵌套列表")
    @GetMapping( "/category")
    public AjaxResult category() {
        return success(categoryService.tree());
    }

    @Operation(summary = "显示商品列表")
    @GetMapping("/skuList/{pageNum}/{pageSize}")
    public TableDataInfo skuList(
            @Parameter(description = "当前页码")
            @PathVariable Integer pageNum,
            @Parameter(description = "每页记录数")
            @PathVariable Integer pageSize,
            SkuQuery skuQuery) {
        PageHelper.startPage(pageNum, pageSize);
        List<ProductSkuVo> list = productSkuService.selectProductSkuList(skuQuery);
        return getDataTable(list);
    }

    @Operation(summary = "获取全部品牌")
    @GetMapping("/brand")
    public AjaxResult selectBrandAll() {
        return success(brandService.list());
    }

    @Operation(summary = "商品详情")
    @GetMapping("/item/{skuId}")
    public AjaxResult item(
            @Parameter(description = "skuId")
            @PathVariable Long skuId){
        ItemVo itemVo = new ItemVo();
        CompletableFuture<Long> futureProductSku = new CompletableFuture<>().supplyAsync(() -> {
            //1.组装商品sku的基础信息
            ProductSku productSku = productSkuService.getProductSku(skuId);
            itemVo.setProductSku(productSku);
            return productSku.getProductId();
        });
        CompletableFuture<Void> futureProduct = futureProductSku.thenAcceptAsync(productId -> {
            //获取对应商品id的商品对象
            Product product = productService.getById(productId);
            //4.组装轮播图
            String[] sliderUrlList = product.getSliderUrls().split(",");
            itemVo.setSliderUrlList(sliderUrlList);
            //6.组装规格信息
            JSONArray specValueList = JSON.parseArray(product.getSpecValue());
            itemVo.setSpecValueList(specValueList);
        });
        CompletableFuture<Void> futureSpecValueMap = futureProductSku.thenAcceptAsync(productId -> {
            //7.组装商品规格对应商品skuId信息
            Map<String, Long> skuSpecValueMap = productSkuService.getSkuSpecValueMap(productId);
            itemVo.setSkuSpecValueMap(skuSpecValueMap);
        });
        CompletableFuture<Void> futureDetailsImageUrlList = futureProductSku.thenAcceptAsync(productId -> {
            //5.组装详情图片url
            String[] detailsImageUrlList = detailsService.getDetailsImageUrlList(productId);
            itemVo.setDetailsImageUrlList(detailsImageUrlList);
        });

        CompletableFuture<Void> futureSkuPrice = new CompletableFuture<Void>().runAsync(() -> {
            //2.组装skuPrice
            SkuPriceVo skuPriceVo = productSkuService.getSkuPrice(skuId);
            itemVo.setSkuPrice(skuPriceVo);
        });
        CompletableFuture<Void> futureSkuStockVo = new CompletableFuture<Void>().runAsync(() -> {
            //3.组装skuStock
            SkuStockVo skuStockVo = stockService.getSkuStockVo(skuId);
            itemVo.setSkuStock(skuStockVo);
        });


        CompletableFuture.allOf(
                futureProductSku,
                futureProduct,
                futureSkuPrice,
                futureSkuStockVo,
                futureSpecValueMap,
                futureDetailsImageUrlList).join();

        return success(itemVo);

    }
}